What was found
BRAKE OVHT WARNING MSG IN FLIGHT, LHOB BTMS EICAS INDICATION BOX SHOWED RED, AND INDICATED 20, IN CRUISE FLIGHT / REMOVED AND REPLACED ASCU IAW CRJ900 AMM 32-44-06-000/400-801-A01 AND REMOVED AND REPLACED LH OB BRAKE TEMP SENSOR IAW CRJ900 AMM 32-46-01-000/400-801-A01-PSA. ASCU BITE-TEST GOOD AT THIS TIME IAW CRJ900 AMM 32-44-06-740-801-A01 AND LH OB BRAKE TEMP SENSOR SELF-TEST GOOD AT THIS TIME IAW CRJ900 AMM 32-46-01-740-801-A01.